SN74LV245APWR

SN74LV245APWR is the tape-and-reel TSSOP-20 code of TI's LV octal bus transceiver, eight non-inverting channels with a common direction pin and output enable. The selection point is the supply range: the LV family operates from 2 V to 5.5 V, so this transceiver serves 5 V legacy buses and 3.3 V systems with one orderable, where the faster LVC245A in this catalog stops at 3.6 V. That makes it the natural refresh and second-source part for the huge installed base of 245-style address and data bus interfaces in industrial controllers, POS terminals, test fixtures and education equipment. 3-state outputs let multiple transceivers share a backplane, and the direction control keeps the data path protocol-agnostic, working for multiplexed address/data schemes and parallel peripheral buses alike. Selection advice: confirm the logic family, not just the 245 function — LV, LVC and AHCT versions share the footprint but differ in supply ceiling, thresholds and speed, and substituting across families can break timing or level margins. If your bus is purely 3.3 V and speed-critical, compare the LVC245A; if any segment still runs at 5 V, this LV code is the correct line item. Parameters verified against Texas Instruments documentation.